Part of the Case Repair Manuals.
Need the factory teardown specs for your Case 422/M2 or 422T/M2 engine? This 73-page service manual (OEM #Bur 6-79550NA) covers both the naturally aspirated M2 and turbocharged T/M2 variants, from first bolt removal through final run-in after overhaul. Inside: engine service specifications for both variants, a full troubleshooting section covering irregular running, overheat, faulty charging, and excessive smoke, plus dedicated turbocharger troubleshooting for the 422T/M2. You also get detailed exploded views of every major assembly, step-by-step disassembly and reassembly procedures for the cylinder head, pistons, governor, and fuel injection nozzles, and a complete engine torque specifications table. Tighten injection pipe nuts to 15-24 Nm (11-18 lb-ft); nozzle holder torque is 58-69 Nm (43-51 lb-ft). Your engine is apart and the clock is running. Bookmarked and searchable: jump to any procedure on your tablet without scrolling through pages.
What's Inside This Case 422/M2, 422T/M2 Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine Identification & Description | 5-7 | General Information, 422/M2 General Engine Specifications, 422T/M2 General Engine Specifications, Cylinder Block, Crankshaft, Pistons and Connecting Rods, Camshaft, Cylinder Head, Rocker Cover and Inlet Manifold, Gear Train, Fuel System, Lubricating System, Cooling System, Turbocharger Lubrication |
| Safety Precautions | 8-13 | Radiator Cap and Hot Coolant Caution |
| Engine Troubleshooting Symptoms | 14-17 | Engine Stops During Operation, Overheat of the Engine, Starter Motor Does Not Run, Oil Pressure Lamp Not Turned Off, Turbocharger Bearing Failures, Engine Noise/Whistling, Excessive Oil Consumption (Oil Smoke From Exhaust) |
| Engine Component Removal | 24-25 | Alternator, Cooling Fan and Pulley, Fuel Injection Pump, Injectors, Leak-Off Rail, Water Pump Assembly, Exhaust and Inlet Manifold, External Oil Pipe, Cylinder Block Main Oil Gallery, Fuel Injection Pipes |
| Cylinder Head & Rocker Assembly | 26-30 | Inspection, Valve to Valve Guide Clearance, Valve Seat Recess, Valve Seat, Valve Spring, Reassembly |
| Cylinder Block & Valve Inspection | 31-33 | Valve Stem Wear, Valve Stem Diameters, Intake Valve, Exhaust Valve, Valve to Valve Guide Clearance, Inspection and Correction, Cylinder Block Top Face, Cylinder Bore, Bore Specifications |
| Piston and Piston Rings | 34-45 | Disassembly, Inspection, Piston, Oversized Piston, Piston Ring, Piston Ring Gap |
| Governor | 46-57 | Construction/Function, Maximum Speed Set Bolt, Maximum Fuel and Start Spring |
| Fuel Injection Nozzle & Post-Overhaul Startup | 58-62 | Specification, Construction/Function, Throttle-Type Nozzle, Disassembly/Inspection, Reassembly/Adjustment, Spray Condition |
| Turbocharger Troubleshooting | 63-67 | Sluggish Speed Pickup, Excessive or Abnormal Vibration, Dirty Exhaust Smoke, White Exhaust Smoke, Abnormally High Oil Consumption, Engine Lacks Output Power |
| Abnormal Running Noise & Turbocharger Service | 68-73 | Turbocharger Lubrication, After Turbocharger Service, Check the Exhaust System, Disconnection of the Glow Plug |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel filter replacement | Replace | p. 13 |
| Air cleaner element action | Clean or replace element | p. 66 |
| Injection nozzle tightening torque | 58 - 69 Nm (43 - 51 pound-feet) | p. 25 |
| Injection pipe tightening torque | 15 - 24 Nm (11 - 18 pound-feet) | p. 25 |
| Valve cover vent hose length | 460 mm (18.1 inches) | p. 16 |
| Gasket/packing replacement | Replace gasket, packing, etc. Use liquid gasket to prevent oil leakage where necessary. | p. 49 |
| Action for insufficient battery charge | Charge or replace battery | p. 13 |
| Thermostat opening temperature | 71° C (160° F) | p. 24 |
| Thermostat full open temperature | 82° C (180° F) | p. 24 |
| Cylinder head bolts torque | 98-103 Nm (72-76 pound-feet) | p. 25 |
| Connecting rod nuts torque | 49-54 Nm (36-40 pound-feet) | p. 25 |
| Crankshaft pulley nut torque | 275-333 Nm (203-246 pound-feet) | p. 25 |
